DE102005039494B4 - Use of a photovoltaic system - Google Patents

Abstract

use a photovoltaic system (1) with individual photovoltaic modules (3), by means of which sunlight can be converted into electrical energy and the recovered electrical energy into a public electricity supply network is fed, the photovoltaic modules (3) on a roof are arranged, which is designed as a shadow roof (2), for Cultivation of at least one plant species from the genus of the shade plants, by means of essentially in the shading area of the shade roof a planting area (4) is at least partially planted.

Description

The The present invention relates to a use of a photovoltaic system with individual photovoltaic modules, by means of which sunlight into electrical Energy convertible and the electrical energy gained into a public Electricity supply network can be fed, with the photovoltaic modules arranged on a roof are, which is designed as a shadow roof.

Photovoltaic systems are usually on roofs arranged. However, there is also the possibility of photovoltaics areas to install. Due to the legal situation, a higher feed-in tariff is applied, provided that the generated electrical energy in a public electricity supply network is fed. This subsidy is higher for roof installations than for open space installations.

Out WECKER, R .: Use of photovoltaic elements in conjunction with wide-stretched light surface structures. In: Electricity industry. Jg. 91 (1992), No. 9, pages 523-528 goes a parking lot roofing with applied solar modules out. The parking roof in the form of a wide-stretched lightweight surface structure essentially donates the parking spaces underneath or the vehicles parked thereon and a marginal planting Shadow.

In the DE 198 34 016 A1 the combination of a solar module is described with a support member, wherein the support member is able to fulfill other functions in addition to the support function, such as shading. A construction described therein leads to a reduction of the light and heat input even when not full-surface siege of the carrier with cells.

It Selective transmission is achieved to give a special color impression to create in space, e.g. in plants (greenhouses).

In the DE 203 19 065 U1 is a solar array with by means of a support structure held over a base module arrangement with one or more solar modules known. The base can be formed by the ground, with support of the support structure sunk into the ground, in particular are rammed.

The The present invention has the object of a novel photovoltaic system to create which one increased feed justified no house roof installation required and an additional usage possibilities brings with it.

The The above object is achieved by the entire doctrine of Claim 1 solved with the features specified therein. The Photovoltaic modules are arranged on a dedicated roof, which is designed as a shadow roof, and also in the shading area in particular, substantially below the shade roof, but possibly also laterally and / or on the front and / or back same a planting area is provided. By having the photovoltaic modules on a roof are arranged, the raised feed founded. At the same time by the shading of the roof, which as Shade roof should be formed, in conjunction with the planting area a cultivation of plants. This results in a whole series of advantages such. B. the improved Financeability due to the increased feed-in tariff, as well a simplified cultivation of especially shady ones and / or weather conditions (eg rain, hail, etc.) to be protected Plants (such as tomatoes) used for seen a big one would mean constructive effort.

According to the invention plants are for the planting area the genus of the so-called "shadow plants" are plants, the one shading on the order of magnitude of 80% relative to a daily unit.

When special shade plant is expediently Ginseng, a medicinal plant, provided under normal conditions only elaborate and under increased Cost can be cultivated. Due to the invention, ginseng can therefore also be cultivated domestically.

According to one special design of the photovoltaic system is the shadow roof with at least one support device, in particular a column with the planting area in connection. Thus, all, the shadow roof surrounding space.

The support means is either on a conventional one Foundation on which has the planting surface at the top or the shade roof, the support device as well as the planting area form a self-contained constructive, preferably optionally also movable functional unit.

in the Case of a constructive functional unit, it is possible to to make these also variable in their position.

Furthermore, the angle of inclination of the shade roof is expediently changed manually or by motor. In both cases, the Possibility to optimally align the positioning of the photovoltaic system on the one hand or the shadow roof on the other hand. With a motorized change of the angle of inclination, this can be done fully automatically with the aid of sensors.

Of Further can Provision may be made for allowing at least one page area the shade roof in case of need temporarily completely or at least partially to close. This can usefully be realized by a tarpaulin or a roller blind. Again, one can automatic control be provided.

The Photovoltaic modules are according to a particular embodiment directly on top of the shade roof. Here are the photovoltaic modules expediently as thin-film modules educated.

alternative can do this the photovoltaic modules also be arranged at a distance to the roofing membrane and in this case form at least one or a plurality of ventilation channels. This can be done, for example, by an additional roofing membrane and photovoltaic modules retracted structural layer be realized. By the one or the other Ventilation channel / channels is ensures removal of heat forming at the bottom and thus avoid damage due to heat build-up.

Furthermore the photovoltaic system can expediently its own irrigation system exhibit.

in the Condition of operation are one or more photovoltaic systems positioned at a distance to each other, suitably about the twice the width of the photovoltaic systems, creating its own shading the photovoltaic modules is avoided.

At least a side portion of the shade roof may be at least partially closed be, with this part photovoltaic elements z. B. thin-film elements wearing.

When Closure of the side area can be a laterally positionable Roof area be provided.

Of the Roof area can conveniently over a Swivel to be pivotable to the shade roof. This can be a optimum adaptation to the position of the sun and the shading surface.

The Swivel expediently means for locking the pivoting position.

below is based on various embodiments the invention closer explained. Recurrent Features are for clarity only once provided with a reference numeral. Show it:

1 a greatly simplified schematic representation of an embodiment of the photovoltaic system;

2 an alternative embodiment of the photovoltaic system;

3 a section of the connection area between the roofing membrane and the photovoltaic modules and

4 a greatly simplified schematic representation of another embodiment of the photovoltaic system;

numeral 1 in 1 identifies the photovoltaic system in its entirety. The photovoltaic system is designed as a functional unit and includes a shadow roof 2 on which there are several photovoltaic modules 3 (eg polycrystalline or monocrystalline photovoltaic modules) forming a gap to ensure a ventilation channel 11 are located.

The shadow roof 2 stands over a pillar 6 with a planting area 4 in connection. But it can also be provided several columns. The planting area 4 is in the embodiment according to 1 formed as a trough-shaped part and includes a planting of plants 5 the genus shadow plants, in particular of ginseng. In the area of the planting area 4 is also an irrigation system 12 provided with a pump and a hose feed and a (not shown) water reservoir or another type of water source. The planting area 4 lies essentially in the shading area of the shade roof 3 , ie it can also project forward, to the side or to the back.

In the area of fixation of the shade roof 2 at the pillar 6 is a hinge 13 provided, which ensures that the shadow roof 2 is pivotable either in a plane or in an additional, at an angle to the first plane plane. In the latter case is the shadow roof 2 advantageously via a ball joint with the column 6 connected. The change in the position or inclination of the shade roof 2 can be done by hand or by machine, ie automatically.

In the side area of the shade roof 2 there are eyelets 16 for attachment of Shading devices such. B. a tarpaulin 9 or a roller blind.

Through the shade roof 2 becomes, as can be seen from the drawings, for an ideal positioning for the photovoltaic modules 3 On the other hand, according to the invention, the shadow area can be used as a planting area.

In the 1 shown photovoltaic system can be conveniently handled by not shown rollers or the like total, for example, changed in position.

Alternatively, the in 2 illustrated photovoltaic system a solid foundation 7 on which the pillar 6 wearing. The planting area 4 This is not constructive with the shadow roof 2 connected. In the in 2 illustrated embodiment are so-called thin-film modules as photovoltaic modules 3 without ventilation duct connected to the roofing membrane.

To ensure effective ventilation (cf. 1 , Ventilation duct 11 ) has a particular embodiment of the photovoltaic system between the photovoltaic modules 3 and the roofing membrane 10 spacer 15 (see. 3 ) in the form of an intermediate layer, whereby on the one hand a spacing of the roofing membrane 10 to the photovoltaic modules 3 is generated, but at the same time also an effective ventilation of the photovoltaic modules 3 can be done.

According to the in 4 illustrated embodiment of the photovoltaic system is (advantageously south-oriented) side area of the shadow roof 2 at least partially closed in the manner of a facade, this part also photovoltaic elements 3 z. B. carries thin-film elements. As a closure of the side area is a roof area 17 provided, which via a swivel joint 18 and in 4 not shown) means for locking the pivoting position to the shadow roof is pivotable. This allows optimal adaptation to the position of the sun and the planting area 4 respectively.

With The present invention is a novel use of a Photovoltaic system created, which allows an increased feed-in tariff too while providing the opportunity to plants in the area of the shaded area formed by the shade roof to cultivate, whose cultivation otherwise for cost reasons in Germany would be unattractive. The invention therefore makes a very special contribution to the relevant Field of technology.

1

Photovoltaic system

2

shadow roof

3

photovoltaic module

4

planting area

5

plant

6

pillar

7

foundation

8th

joist hanger

9

Plans

10

roofing membrane

11

ventilation duct

12

irrigation system

13

swivel

14

floor pan

15

spacer

16

securing eye

17

roof

18

swivel

Claims (2)

Use of a photovoltaic system ( 1 ) with individual photovoltaic modules ( 3 ), by means of which sunlight is converted into electrical energy and the recovered electrical energy is fed into a public electricity supply network, wherein the photovoltaic modules ( 3 ) are arranged on a roof which serves as a shadow roof ( 2 ) is formed, for cultivating at least one plant species from the genus of the shade plants, by means of which substantially in the shading area of the shade roof a planting area ( 4 ) is at least partially planted. Use of a photovoltaic system according to claim 1, characterized in that ginseng is provided as a shade plant.